But relationship experts say this doesn’t always ring true. You can have a successful marriage and balance prolific careers — it just takes work.

With less time together, Dr. Mike McNulty, a Master Certified Gottman Therapist, says maintaining a marital friendship, romance, and intimacy; managing ongoing conflict that is inevitable in marriage; and creating and maintaining a meaningful relationship is more challenging for partners with successful careers.

He says these couples are at more risk when the connection to the career becomes primary, and the commitment to and trust in the relationship becomes questionable. “Having a spouse addicted to work can feel like as much of a betrayal as extramarital affair to the other spouse.”

But as research psychologist and couples counselor John Gottman explains in his book “What Makes Love Last,” 40 years of research shows that trust and commitment are crucial to holding relationships together. “When both partners have a strong commitment to a relationship, this leads to a strong sense of trust, which makes love last,” McNulty explains.

Here’s how some of the most successful married couples keep their relationships strong:

Facebook’s Mark Zuckerberg, for example, drew up a relationship agreement with his then-girlfriend and now wife Priscilla Chan when she moved to Palo Alto, California, several years ago. In it, he agreed to take her on a date once a week and spend 100 minutes of alone time each week with her outside the office or his apartment.

McNulty says creating rituals can help. “Rituals are more formal ways of connecting and ensure spouses reserve time for one another or their families and make specific plans to do the things they want to do,” he explains.

Whether it’s a weekly date night or a trip for just the immediate family, he says busy, successful partners have to be more careful with their time to make sure they connect with one another and enjoy the things that define or give meaning to their relationships.

Twitter, @britEntrepreneurs Brit and Dave Morin make a point to put their phones away at dinner.

Gerber says it also helps if these connections are to things outside of the ego. Like Zuckerberg and Chan, “people dedicated to making the world better or with a spiritual side seem to have more chance of success in partnership because they aren’t depending on external factors only to feel good,” she says.

2. They communicate well and often.

“Make time every day to talk with your spouse, in person or by phone, about one another’s lives,” McNulty says, noting that texting is often not enough.

“Focus on the stressful things or events that are important to your spouse. Listen. Help your spouse express his or her feelings. Empathise. Show support. Don’t problem solve or fix. Most of us just want to be heard.”

According to McNulty, Gottman’s research shows that this kind of conversation is the one common thing that all successful couples do after marriage therapy.

In The Gottman Method of Couple Therapy, he says this kind of conversation is called a “stress reducing conversation.” “Successful, busy couples’ relationships will suffer if they fail to find a way to have this type of conversation on a regular basis,” McNulty says.

Successful couples also regularly share the fondness and admiration they have for one another. They tell each other a few things they appreciate about their spouse every day, McNulty says. “This can be about who your spouse is or something he or she did recently. If partners travel or have different schedules, busy, successful couples may have to do this by phone.”

While in some instances sharing fondness can be done by way of a flirtatious text, expressing appreciation for your spouse about more serious matters should be done by phone or in person.

“Saying something like, ‘I cannot tell you how much I appreciated how you listened to our son last night when he was so upset’ has a more powerful impact when your spouse sees your facial expressions or hears the sincerity in the tone of your voice.”

3. They agree upon important issues from the get go.

“Two egos in a marriage can be great if all the important issues are agreed upon up front,” Gerber says. “It can be especially good if each person in the power couple has his or her own sphere in which to rise up and each gains the other’s respect for different talents.”

“‘I don’t want to be deprived of your work,'” she reports him saying to Allure magazine. “‘I want to watch it, too. And the world has not seen the best of you yet. So you cannot stop until some of that is put out.’ So he sort of really pushed me, like, ‘Get up on your feet and get out there.’ And he was right.”

Some of the most important issues couples should agree upon early on include sexual and romantic needs, who pays for what, and family boundaries.

Most break ups happen because of cheating Gerber says. “Couples who face the reality of this threat head on and deal with it stand the most chance of success.”

Gerber says there is a whole range of what’s acceptable within the bounds of a relationship if agreed upon in advance, so partners need to hash it out and agree on what the rules to live by are.

Arrangements could include:

No alone dates with the opposite sex, even socially

Certain outside-the-marriage content is ok

We can bring others into the marriage and and have an open relationship

“Know what your partner can handle, what they want, and what the deal breakers are going to be as you face head on the fact that cheating will be an option,” Gerber advises.

One way to limit issues later is to write a handbook detailing boundaries and expectations from the beginning.

“Don’t be afraid to put it all in writing to refer back to as a living breathing document,” she says. “And plan to have meetings about how you are running your marriage and family just as you would for your company or any other project you care about profoundly.”

4. They commit overall to one another.

For a marriage to remain successful when both partners are highly driven and busy, McNulty says couples must remain committed to one another before anything or anyone else.

“A successful career and exciting workplace can distract partners from their relationship, and from the family they have created,” he says.

“Each partner has to be able to trust that the other has his or her back, and that they intend to do all they can to understand and support one another,” McNulty says. “The relationship must come first.”